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1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.design.widget;
18
19import android.animation.Animator;
20import android.animation.ObjectAnimator;
21import android.animation.StateListAnimator;
22import android.annotation.TargetApi;
23import android.content.res.ColorStateList;
24import android.graphics.PorterDuff;
25import android.graphics.Rect;
26import android.graphics.drawable.Drawable;
27import android.graphics.drawable.InsetDrawable;
28import android.graphics.drawable.LayerDrawable;
29import android.graphics.drawable.RippleDrawable;
30import android.os.Build;
31import android.support.v4.graphics.drawable.DrawableCompat;
32import android.support.v4.view.ViewCompat;
33import android.view.animation.AnimationUtils;
34import android.view.animation.Interpolator;
35
36@TargetApi(Build.VERSION_CODES.LOLLIPOP)
37class FloatingActionButtonLollipop extends FloatingActionButtonIcs {
38
39    private final Interpolator mInterpolator;
40    private InsetDrawable mInsetDrawable;
41
42    FloatingActionButtonLollipop(VisibilityAwareImageButton view,
43            ShadowViewDelegate shadowViewDelegate) {
44        super(view, shadowViewDelegate);
45
46        mInterpolator = view.isInEditMode() ? null
47                : AnimationUtils.loadInterpolator(mView.getContext(),
48                        android.R.interpolator.fast_out_slow_in);
49    }
50
51    @Override
52    void setBackgroundDrawable(ColorStateList backgroundTint,
53            PorterDuff.Mode backgroundTintMode, int rippleColor, int borderWidth) {
54        // Now we need to tint the shape background with the tint
55        mShapeDrawable = DrawableCompat.wrap(createShapeDrawable());
56        DrawableCompat.setTintList(mShapeDrawable, backgroundTint);
57        if (backgroundTintMode != null) {
58            DrawableCompat.setTintMode(mShapeDrawable, backgroundTintMode);
59        }
60
61        final Drawable rippleContent;
62        if (borderWidth > 0) {
63            mBorderDrawable = createBorderDrawable(borderWidth, backgroundTint);
64            rippleContent = new LayerDrawable(new Drawable[]{mBorderDrawable, mShapeDrawable});
65        } else {
66            mBorderDrawable = null;
67            rippleContent = mShapeDrawable;
68        }
69
70        mRippleDrawable = new RippleDrawable(ColorStateList.valueOf(rippleColor),
71                rippleContent, null);
72
73        mContentBackground = mRippleDrawable;
74
75        mShadowViewDelegate.setBackgroundDrawable(mRippleDrawable);
76    }
77
78    @Override
79    void setRippleColor(int rippleColor) {
80        if (mRippleDrawable instanceof RippleDrawable) {
81            ((RippleDrawable) mRippleDrawable).setColor(ColorStateList.valueOf(rippleColor));
82        } else {
83            super.setRippleColor(rippleColor);
84        }
85    }
86
87    @Override
88    public void onElevationChanged(float elevation) {
89        mView.setElevation(elevation);
90        if (mShadowViewDelegate.isCompatPaddingEnabled()) {
91            updatePadding();
92        }
93    }
94
95    @Override
96    void onTranslationZChanged(float translationZ) {
97        StateListAnimator stateListAnimator = new StateListAnimator();
98        // Animate translationZ to our value when pressed or focused
99        stateListAnimator.addState(PRESSED_ENABLED_STATE_SET,
100                setupAnimator(ObjectAnimator.ofFloat(mView, "translationZ", translationZ)));
101        stateListAnimator.addState(FOCUSED_ENABLED_STATE_SET,
102                setupAnimator(ObjectAnimator.ofFloat(mView, "translationZ", translationZ)));
103        // Animate translationZ to 0 otherwise
104        stateListAnimator.addState(EMPTY_STATE_SET,
105                setupAnimator(ObjectAnimator.ofFloat(mView, "translationZ", 0f)));
106        mView.setStateListAnimator(stateListAnimator);
107
108        if (mShadowViewDelegate.isCompatPaddingEnabled()) {
109            updatePadding();
110        }
111    }
112
113    @Override
114    public float getElevation() {
115        return mView.getElevation();
116    }
117
118    @Override
119    void onCompatShadowChanged() {
120        updatePadding();
121    }
122
123    @Override
124    void onPaddingUpdated(Rect padding) {
125        if (mShadowViewDelegate.isCompatPaddingEnabled()) {
126            mInsetDrawable = new InsetDrawable(mRippleDrawable,
127                    padding.left, padding.top, padding.right, padding.bottom);
128            mShadowViewDelegate.setBackgroundDrawable(mInsetDrawable);
129        } else {
130            mShadowViewDelegate.setBackgroundDrawable(mRippleDrawable);
131        }
132    }
133
134    @Override
135    void onDrawableStateChanged(int[] state) {
136        // no-op
137    }
138
139    @Override
140    void jumpDrawableToCurrentState() {
141        // no-op
142    }
143
144    @Override
145    boolean requirePreDrawListener() {
146        return false;
147    }
148
149    private Animator setupAnimator(Animator animator) {
150        animator.setInterpolator(mInterpolator);
151        return animator;
152    }
153
154    @Override
155    CircularBorderDrawable newCircularDrawable() {
156        return new CircularBorderDrawableLollipop();
157    }
158
159    void getPadding(Rect rect) {
160        if (mShadowViewDelegate.isCompatPaddingEnabled()) {
161            final float radius = mShadowViewDelegate.getRadius();
162            final float maxShadowSize = getElevation() + mPressedTranslationZ;
163            final int hPadding = (int) Math.ceil(
164                    ShadowDrawableWrapper.calculateHorizontalPadding(maxShadowSize, radius, false));
165            final int vPadding = (int) Math.ceil(
166                    ShadowDrawableWrapper.calculateVerticalPadding(maxShadowSize, radius, false));
167            rect.set(hPadding, vPadding, hPadding, vPadding);
168        } else {
169            rect.set(0, 0, 0, 0);
170        }
171    }
172}
173